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When I stress test my gpu,the pc restarts?

Last response: in Graphics & Displays
May 31, 2014 11:13:24 PM

I built a pc and this is my first rig,and i stress tested my pc and during the kombustor stress test,my pc restarts,i am really worried as its my first pc, i only pass test when i under-clock my gpu 50mhz, it will pass the test but what the fuck is this that whole of the world is playing with over-clock and i with under-clock. Altogether my pc spec: Intel core i5 750
gtx 650 ti
4gb ram
500 psu
Asus P7P55 LX
May 31, 2014 11:17:54 PM

You built this machine from used parts?
(if you did; GOOOD LAD!!)
But the Q stands.
List power supply; likely SH1T..
Likely source of prob; dirty gpu heatsink or dried out thermal paste;underclock cures prob.
Shit power supply cant keep up'
underclock cures prob.
Never put a case fan in decade old pc box; underclock cures prob.
To gauge if temps prob take side off and play games.
If no diff its (more likely a XXXX power supply,
but some factory o/c cards just couldnt pull the clocks. get it working well mate, 50 mhtz is nowt
May 31, 2014 11:27:15 PM

where i live,we cant find parts so i have to ask out a company to ship me some parts as mentioned above,they arent used,i unpacked them..
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May 31, 2014 11:35:34 PM

All unused parts, gpu got too higher clocks(common) or badly pasted gpu chip. 50 mhtz nothing
May 31, 2014 11:39:32 PM

Still didnt say what power supply is.
May 31, 2014 11:41:10 PM

yesterday night i pulled out the gpu and blowed all the dust away form it and changed the pci slot and i come to know that the temperatures are staying much low but the problem is that when i reach a total of 99 % gpu usage,the pc restarts............i hope it will help in making a judgement
PSU NAME: seasonic SS-500GM PFC F3

Best solution

June 1, 2014 12:15:45 AM

If the gpu temps are low that rules out a badly pasted gpu chip.
It leaves voltage from the power supply dropping at max load,or your gpu chip is not stable at its standard settings.
This can happen on lower price cards,its not rare.
So its 50 / 50 .
I would leave the card underclocked and not worry about it.
50 mhrtz is 5%.